Introduction - If you have any usage issues, please Google them yourself
Take the current display mode INT 10H PUSH AX to save the current display (AL) MOV AH, 0 set color 80 × 25 text mode MOV AL, 3 INT 10H MOV CX, 1 time shows a smiley face character and properties MOV DH, 12H 12 lines, from the middle of the screen on the left began to MOV DL, 0 0 Lie BEGIN: CMP DL, 79 move to 79 on the exit JAE EXIT CMP DH, 0 move to the first line of the exit 0